Abstract
Persistent spectral hole burning (PSHB) and light-induced absorption spectra with the pump of burning light were measured and studied in the Sm2+-doped xAl2O3⋅(100−x)SiO2 glasses to reveal the electron transfer and the formation of PSHB at room temperature. It was observed that the density of Sm2+ at the burnt sites decreased, while that of Sm3+ increased after the burning. The hole depth increased with the increase of Al2O3 concentration. The formation of PSHB is attributed to a one-step electron transfer by tunneling through the excited state, D05. The traps that capture the electrons produced by the ionization of Sm2+ may be related to the oxygen vacancies. In addition, the thermal activated barrier height between the burnt and unburnt configuration was estimated as ∼1.0 eV by thermal hole filling.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.